1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SOCKET_PROTO_H_ 27 #define _SYS_SOCKET_PROTO_H_ 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #include <sys/socket.h> 34 35 /* 36 * Generation count 37 */ 38 typedef uint64_t sock_connid_t; 39 40 #define SOCK_CONNID_INIT(id) { \ 41 (id) = 0; \ 42 } 43 #define SOCK_CONNID_BUMP(id) (++(id)) 44 #define SOCK_CONNID_LT(id1, id2) ((int64_t)((id1)-(id2)) < 0) 45 46 /* Socket protocol properties */ 47 struct sock_proto_props { 48 uint_t sopp_flags; /* options to set */ 49 ushort_t sopp_wroff; /* write offset */ 50 ssize_t sopp_txhiwat; /* tx hi water mark */ 51 ssize_t sopp_txlowat; /* tx lo water mark */ 52 ssize_t sopp_rxhiwat; /* recv high water mark */ 53 ssize_t sopp_rxlowat; /* recv low water mark */ 54 ssize_t sopp_maxblk; /* maximum message block size */ 55 ssize_t sopp_maxpsz; /* maximum packet size */ 56 ssize_t sopp_minpsz; /* minimum packet size */ 57 ushort_t sopp_tail; /* space available at the end */ 58 uint_t sopp_zcopyflag; /* zero copy flag */ 59 boolean_t sopp_oobinline; /* OOB inline */ 60 uint_t sopp_rcvtimer; /* delayed recv notification (time) */ 61 uint32_t sopp_rcvthresh; /* delayed recv notification (bytes) */ 62 socklen_t sopp_maxaddrlen; /* maximum size of protocol address */ 63 boolean_t sopp_loopback; /* loopback connection */ 64 }; 65 66 /* flags to determine which socket options are set */ 67 #define SOCKOPT_WROFF 0x0001 /* set write offset */ 68 #define SOCKOPT_RCVHIWAT 0x0002 /* set read side high water */ 69 #define SOCKOPT_RCVLOWAT 0x0004 /* set read side high water */ 70 #define SOCKOPT_MAXBLK 0x0008 /* set maximum message block size */ 71 #define SOCKOPT_TAIL 0x0010 /* set the extra allocated space */ 72 #define SOCKOPT_ZCOPY 0x0020 /* set/unset zero copy for sendfile */ 73 #define SOCKOPT_MAXPSZ 0x0040 /* set maxpsz for protocols */ 74 #define SOCKOPT_OOBINLINE 0x0080 /* set oob inline processing */ 75 #define SOCKOPT_RCVTIMER 0x0100 76 #define SOCKOPT_RCVTHRESH 0x0200 77 #define SOCKOPT_MAXADDRLEN 0x0400 /* set max address length */ 78 #define SOCKOPT_MINPSZ 0x0800 /* set minpsz for protocols */ 79 #define SOCKOPT_LOOPBACK 0x1000 /* set loopback */ 80 81 #define IS_SO_OOB_INLINE(so) ((so)->so_proto_props.sopp_oobinline) 82 83 #ifdef _KERNEL 84 85 struct T_capability_ack; 86 87 typedef struct sock_upcalls_s sock_upcalls_t; 88 typedef struct sock_downcalls_s sock_downcalls_t; 89 90 /* 91 * Upcall and downcall handle for sockfs and transport layer. 92 */ 93 typedef struct __sock_upper_handle *sock_upper_handle_t; 94 typedef struct __sock_lower_handle *sock_lower_handle_t; 95 96 struct sock_downcalls_s { 97 void (*sd_activate)(sock_lower_handle_t, sock_upper_handle_t, 98 sock_upcalls_t *, int, cred_t *); 99 int (*sd_accept)(sock_lower_handle_t, sock_lower_handle_t, 100 sock_upper_handle_t, cred_t *); 101 int (*sd_bind)(sock_lower_handle_t, struct sockaddr *, socklen_t, 102 cred_t *); 103 int (*sd_listen)(sock_lower_handle_t, int, cred_t *); 104 int (*sd_connect)(sock_lower_handle_t, const struct sockaddr *, 105 socklen_t, sock_connid_t *, cred_t *); 106 int (*sd_getpeername)(sock_lower_handle_t, struct sockaddr *, 107 socklen_t *, cred_t *); 108 int (*sd_getsockname)(sock_lower_handle_t, struct sockaddr *, 109 socklen_t *, cred_t *); 110 int (*sd_getsockopt)(sock_lower_handle_t, int, int, void *, 111 socklen_t *, cred_t *); 112 int (*sd_setsockopt)(sock_lower_handle_t, int, int, const void *, 113 socklen_t, cred_t *); 114 int (*sd_send)(sock_lower_handle_t, mblk_t *, struct nmsghdr *, 115 cred_t *); 116 int (*sd_send_uio)(sock_lower_handle_t, uio_t *, struct nmsghdr *, 117 cred_t *); 118 int (*sd_recv_uio)(sock_lower_handle_t, uio_t *, struct nmsghdr *, 119 cred_t *); 120 short (*sd_poll)(sock_lower_handle_t, short, int, cred_t *); 121 int (*sd_shutdown)(sock_lower_handle_t, int, cred_t *); 122 void (*sd_clr_flowctrl)(sock_lower_handle_t); 123 int (*sd_ioctl)(sock_lower_handle_t, int, intptr_t, int, 124 int32_t *, cred_t *); 125 int (*sd_close)(sock_lower_handle_t, int, cred_t *); 126 }; 127 128 typedef sock_lower_handle_t (*so_proto_create_func_t)(int, int, int, 129 sock_downcalls_t **, uint_t *, int *, int, cred_t *); 130 131 typedef void (*so_proto_quiesced_cb_t)(sock_upper_handle_t, queue_t *, 132 struct T_capability_ack *, struct sockaddr *, socklen_t, 133 struct sockaddr *, socklen_t, short); 134 typedef int (*so_proto_fallback_func_t)(sock_lower_handle_t, queue_t *, 135 boolean_t, so_proto_quiesced_cb_t); 136 137 /* 138 * These functions return EOPNOTSUPP and are intended for the sockfs 139 * developer that doesn't wish to supply stubs for every function themselves. 140 */ 141 extern int sock_accept_notsupp(sock_lower_handle_t, sock_lower_handle_t, 142 sock_upper_handle_t, cred_t *); 143 extern int sock_bind_notsupp(sock_lower_handle_t, struct sockaddr *, 144 socklen_t, cred_t *); 145 extern int sock_listen_notsupp(sock_lower_handle_t, int, cred_t *); 146 extern int sock_connect_notsupp(sock_lower_handle_t, 147 const struct sockaddr *, socklen_t, sock_connid_t *, cred_t *); 148 extern int sock_getpeername_notsupp(sock_lower_handle_t, struct sockaddr *, 149 socklen_t *, cred_t *); 150 extern int sock_getsockname_notsupp(sock_lower_handle_t, struct sockaddr *, 151 socklen_t *, cred_t *); 152 extern int sock_getsockopt_notsupp(sock_lower_handle_t, int, int, void *, 153 socklen_t *, cred_t *); 154 extern int sock_setsockopt_notsupp(sock_lower_handle_t, int, int, 155 const void *, socklen_t, cred_t *); 156 extern int sock_send_notsupp(sock_lower_handle_t, mblk_t *, 157 struct nmsghdr *, cred_t *); 158 extern int sock_send_uio_notsupp(sock_lower_handle_t, uio_t *, 159 struct nmsghdr *, cred_t *); 160 extern int sock_recv_uio_notsupp(sock_lower_handle_t, uio_t *, 161 struct nmsghdr *, cred_t *); 162 extern short sock_poll_notsupp(sock_lower_handle_t, short, int, cred_t *); 163 extern int sock_shutdown_notsupp(sock_lower_handle_t, int, cred_t *); 164 extern void sock_clr_flowctrl_notsupp(sock_lower_handle_t); 165 extern int sock_ioctl_notsupp(sock_lower_handle_t, int, intptr_t, int, 166 int32_t *, cred_t *); 167 extern int sock_close_notsupp(sock_lower_handle_t, int, cred_t *); 168 169 /* 170 * Upcalls and related information 171 */ 172 173 /* 174 * su_opctl() actions 175 */ 176 typedef enum sock_opctl_action { 177 SOCK_OPCTL_ENAB_ACCEPT = 0, 178 SOCK_OPCTL_SHUT_SEND, 179 SOCK_OPCTL_SHUT_RECV 180 } sock_opctl_action_t; 181 182 struct sock_upcalls_s { 183 sock_upper_handle_t (*su_newconn)(sock_upper_handle_t, 184 sock_lower_handle_t, sock_downcalls_t *, cred_t *, pid_t, 185 sock_upcalls_t **); 186 void (*su_connected)(sock_upper_handle_t, sock_connid_t, cred_t *, 187 pid_t); 188 int (*su_disconnected)(sock_upper_handle_t, sock_connid_t, int); 189 void (*su_opctl)(sock_upper_handle_t, sock_opctl_action_t, 190 uintptr_t); 191 ssize_t (*su_recv)(sock_upper_handle_t, mblk_t *, size_t, int, 192 int *, boolean_t *); 193 void (*su_set_proto_props)(sock_upper_handle_t, 194 struct sock_proto_props *); 195 void (*su_txq_full)(sock_upper_handle_t, boolean_t); 196 void (*su_signal_oob)(sock_upper_handle_t, ssize_t); 197 void (*su_zcopy_notify)(sock_upper_handle_t); 198 void (*su_set_error)(sock_upper_handle_t, int); 199 }; 200 201 #define SOCK_UC_VERSION sizeof (sock_upcalls_t) 202 #define SOCK_DC_VERSION sizeof (sock_downcalls_t) 203 204 #define SOCKET_RECVHIWATER (48 * 1024) 205 #define SOCKET_RECVLOWATER 1024 206 207 #define SOCKET_NO_RCVTIMER 0 208 #define SOCKET_TIMER_INTERVAL 50 209 210 #endif /* _KERNEL */ 211 212 #ifdef __cplusplus 213 } 214 #endif 215 216 #endif /* _SYS_SOCKET_PROTO_H_ */ 217